Can the companies that produce mining machines use the devices for a certain period and then drive them to the market?They may first use the level of difficulty they have developed themselves and then sell it later.

I'm very certain that's what had been going on because the new devices themselves needs to be tested and hence if they do test and seems to be mining more blocks than the others sometimes it's possible they might want to stay-in and keep using for a certain time before they finally let it out to the market.

I think it happens, and I think the best way to reduce the chances of this happening is the emergence of more competition in the market, so that users could invest in companies that do not make the equipment available after a long time, when the difficulty of mining is already higher. Companies making things more difficult would have to adjust.

There usually HAS been competition - the last half of last year was a very uncommon period.

Down side - miners get cheaper when there is significant competiton, means more get sold (as long as the production capasity is available) so hashrate goes UP a lot faster 'till the point of "marginal for ROI achievement" is reached for most, then it slows a some 'till the "major farms don't see ROI happening on new gear" range and it slows down a LOT.

What I would like to say is that they can use the devices for a certain period of time, extract the bitcoin and then sell it later.I don't say: product quality testing.

Yes that is what they do when they """""""""""""""test""""""""""""""" them to make sure they work before shipping to customers. There may be some unseen delays in getting products to purchasers because of these """""""""""""""tests""""""""""""""" last longer than expected.

I'm not talking about from it.

For example, the BitMain company is now selling the S9.But the bitmain company has the S10 on hand.The S10 has been tested for quality control and is ready to be sold to customers.But Bitmain wants to sell the S9 on the market first.The customer does not know his S10.Bitmain is doing bitcoin mining with the S10 device.On the one hand, the S11 device is being developed.After completing the development of the device S11, it is selling the device S10.

That's what I want to tell you. I do not know how else I can tell you more clearly.

Most likely they are doing something like this because it looks logical. Only I've never heard someone comlaining about receiving a used miner insteed of a new one so even if they are doing this they are doing it very cautiously.

Moral standing would imply that you share the benefits with those buying your products.

To each their own...

If your pet enters my yard without prior disclosure then I will encourage it to starve to death.If I have to start injuring pets to identify them from each other I will.Scared black c/kats and FAT/happy black dogs are exempt from this type of shit of course.

Moral standing would imply that you share the benefits with those buying your products.

To each their own...

Yeah. I also think that was a wrong thing to do. Especially, they are the producers of a certain mining equipment. It is their responsibility to attain the good quality of the product. They should only test the equipment to check if it is in the good quality and not to earn bitcoins. If so, they should just make their equipment and configure to mine bitcoin or any altcoin and not to sell those products but instead, just mine bitcoins.

Yes they are using those devices but for quality control and testing. They are doing it to test the functionality and the durability of the items. But they are not doing for very long but just in a short span of time. Without any test conducted there is a tendency that we can purchase items that are defective and is not working. But rest assured they are not selling second hand devices.

They can do it and they are doing it. KNC were accused of such mining in the past. I also think BFL, which was a scam on many levels, also purposely delayed shipping to mine for themselves.This is a great way to make money if you don't care about the company's reputation, but are entering the market for a quick buck.

Moral standing would imply that you share the benefits with those buying your products.

To each their own...

Yes this is what it should be. But not all people depend on ethical values. Humanity is a bit greedy. Everyone may not be as good as you.They can think of their own interests. They may not depend on ethical values. There is a lot of news about companies violating ethical rules.

They can do it and they are doing it. KNC were accused of such mining in the past. I also think BFL, which was a scam on many levels, also purposely delayed shipping to mine for themselves.This is a great way to make money if you don't care about the company's reputation, but are entering the market for a quick buck.

the knc case was different, because they were directly producing their asic i remember this, therefore they were testing it quickly after the production is complete, i see no issue with this

yes maybe they went to far with testing of some product, and delivered it later but it's different than what BFL did, which is plan scamming customers